(i) Source: The site from which the pollutants or contaminants come is called source. (ii) Sink: The material or medium which consumes or interacts with a…
A mixture of s and p orbital formed in trigonal symmetry and is maintained at 1200. Example of sp2 hybridized is: Ethylene (C2H4) sp3 Hybridization. This…
Given the basic exponential growth equation A = A0e kt, doubling time can be found by solving for when the original quantity has doubled, that is,…
Solution : Crystal lattice (space lattice) : A regular arrangement of the constituent particles (atoms, ions or molecules ) of a crystalline solid having similar environment in three dimensional space is called crystal lattice or space lattice. What is point and space lattice? Each point in space is called a lattice point and each unit…
Chemistry is an important fundamental topic for civil engineers, e.g. in understanding the properties of building materials, the natural environment (atmosphere and solutions) and the reaction of building materials with the environment (corrosion of metals, durability). Is chemistry good for engineering? Ultimately, as with all engineering degrees, physics and maths are the most important elements…
The formula is B = (Zmp + Nmn − M)c2, where mp and mn are the proton and neutron masses and c is the speed of light. What is fusion reaction in chemistry? In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass…
Decantation Definition Decantation is the process of separation of liquid from solid and other immiscible (non-mixing) liquids, by removing the liquid layer at the top from the layer of solid or liquid below. The process can be carried out by tilting the mixture after pouring out the top layer. What is decantation short answer? Decantation…
A-Level courses are provided for free to students aged 16 to 18 in the UK. All they have to pay to get their A-Levels are a symbolic fee for taking their final exams, which at maximum can be £100. However, there are some further education colleges, which apply fees as high as £1,000 for two…
Subscripts appear at or below the baseline, while superscripts are above. Subscripts and superscripts are perhaps most often used in formulas, mathematical expressions, and specifications of chemical compounds and isotopes, but have many other uses as well. Where is a subscript in chemistry? The number of atoms of each kind is indicated by a subscript…
Atomic Definitions Z is used to signify the atomic number or proton number of an atom. Z = # of protons of an atom. A is used to signify the atomic mass number (also known as atomic mass or atomic weight) of an atom. What is Z and A in chemistry? Z = atomic number…
Clinical chemistry is a quantitative science that is concerned with measurement of amounts of biologically important substances (called analytes) in body fluids. The methods to measure these substances are carefully designed to provide accurate assessments of their concentration. What is the purpose of clinical chemistry quizlet? division concerned with the analysis of body fluids to…
These are ONLY used for the following: -Metal-containing acids and acid ions: the prefix ONLY goes on the hydrogen (mono is dropped) Examples: H2AsO4– = dihydrogen arsenate ion. Do you use prefixes when naming ionic compounds? When naming binary ionic compounds, name the cation first (specifying the charge, if necessary), then the nonmetal anion (element…
electrolyte, in chemistry and physics, substance that conducts electric current as a result of a dissociation into positively and negatively charged particles called ions, which migrate toward and ordinarily are discharged at the negative and positive terminals (cathode and anode) of an electric circuit, respectively. What is electrolyte with example? An electrolyte is a substance…
Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain. What is the…
TOC is calculated by subtraction of the IC value from the TC of the sample. Another variant employs acidification of the sample to evolve carbon dioxide and measuring it as inorganic carbon (IC), then oxidizing and measuring the remaining non-purgeable organic carbon (NPOC). What is TOC purpose? Total Organic Carbon (TOC) is a measure of…
Wet chemistry is a term used to refer to chemistry generally done in the liquid phase. It is also known as bench chemistry because many of the tests performed are done at a lab bench. What is NIR forage analysis? In a nutshell, NIR feed analysis programs a computer to recognize individual nutrients in a…
If a temperature is defined by the average kinetic energy, then the system therefore can be said to have a negative heat capacity. Is heat capacity always positive? Yes, heat capacity always has a positive value. It is the amount of energy (heat) required to raise the temperature of the system. When talking about the…
We’re proud that Abeka is college preparatory. Our textbooks, teaching approach, and courses of study all foster a student’s ability to read with discernment, think critically, and tackle challenging academic subject matter. What is the Abeka method of teaching? But Abeka relies on the spiral teaching method because it’s a proven, time-tested approach. Spiral review…
The Arrhenius equation is k = Ae^(-Ea/RT), where A is the frequency or pre-exponential factor and e^(-Ea/RT) represents the fraction of collisions that have enough energy to overcome the activation barrier (i.e., have energy greater than or equal to the activation energy Ea) at temperature T. Is frequency factor a constant? The pre-exponential factor, A,…
Arvind Arora (Made EJEE Chemistry) (Also on Vedanti Platform) (Best in Physical and Inorganic Chemistry) Vineet Khatri (Any Time Padhai Academy) (Best in Organic Chemistry) Which chemistry teacher is best on YouTube? Vani Ma’am – Wold Of Chemistry. Pahul Sir – Vedantu JEE. Alakh Pandey – Physics Wallah. Mrityunjay Pandey – Gravity Circle. Monica Bedi…
Tincture of iodine (aqueous iodine oral solution, Lugol’s solution) is a solution of iodine 5% plus potassium iodide 10% in water, which is used to reduce the vascularity of the thyroid gland in thyrotoxicosis before surgery. What is the tincture of iodine Class 11? 2-3% solution of iodine in alcohol-water mixture is known as tincture…
Periodic Videos. Periodic Videos. 1.56M subscribers. Exploding Hydrogen Bubbles. CAMERA. Chemistry at The University of Manchester. 2.04K subscribers. Magnets Made From Single Molecules (UoM Chemistry 25) LearnChemE. LearnChemE. 153K subscribers. Who is the best teacher for chemistry? Mr. Ravindra Bhaskar – Best Chemistry Teacher. Prof. Raghunath Toche – Best Chemistry Teacher. Dr. Santosh Haram –…
Students can work independently “Exampro has been incredibly useful with regards to the online teaching of lessons.” Is Exampro for AQA? Question banks Exampro contains thousands of AQA GCSE and A-level Maths questions as well as over 3,500 KS2 and KS3 questions and banks for Level 2 Further Maths and Level 3 (Core) Maths. What…